Chicago's air quality plummeted, making it the world's worst at one point due to Canadian wildfire smoke, according to IQ Air and the Chicago Sun-Times. Health officials advise limited outdoor activity and protective measures.

The Trump-era EPA repealed the "Endangerment Finding" of 2003, inciting criticism from Colorado's Governor Polis and concern over climate change's impacts on the state.

Governor Abbott activates Texas emergency resources ahead of expected flooding in the Panhandle, urging residents to prepare and heed safety advice such as "Turn Around, Don't Drown."

Austin's weather is expected to remain hot with temperatures around 100 degrees, apart from slight chances of showers and thunderstorms over the weekend.

Baltimore issued a flood watch effective starting the afternoon of July 31, with road closures and free parking in garages for flood-zone vehicles. Sandbags are available, and the city is taking measures to ensure safety and preparedness.

A suspect, Andre Thomas, was arrested for a knife-related assault in Northwest Washington, DC after a verbal argument turned violent, causing non-life-threatening injuries to one person.

Texas Governor Greg Abbott activates emergency resources in anticipation of potential flooding in the Panhandle, urging residents to heed warnings and stay safe.

The NWS San Francisco warns of dynamic tides and advises caution near harbors and inlets post-tsunami. Mild coastal weather is expected, with gusty winds and small craft advisories for mariners due to strong northwesterly winds.

The article describes the weather forecast for Seattle, with sunny days and comfortable temperatures expected throughout the week, and a slight chance of showers by Wednesday.

Portland residents can expect a period of sunny and moderate weather, with temperatures peaking around 83-85°F during the day and dipping to around 60°F at night.

Mild summer temperatures are expected in Southern California with occasional fluctuations in water levels due to a distant earthquake. Warmth will increase, especially Inland, but no hazardous marine conditions are forecasted.

The NWS in Las Vegas cautions of breezy conditions and potential critical fire weather in parts of Arizona and Nevada, with strong winds expected but no formal warnings issued.

Honolulu forecast predicts persistent breezy trade winds through the weekend, light showers focused on windward areas, with a slight wind decrease expected next week.